ARRMA 1/12 INFRACTION GROM 3S BLX 4X4 RTR All-Road Street Basher
Big INFRACTION energy, scaled down and ready to run wild. The ARRMA INFRACTION GROM 3S BLX 4X4 RTR is the first-ever all-road street basher on the GROM platform — a category-defining 1/12 scale machine that packs the tire-roasting, drift-happy chaos of the full-size INFRACTION into a compact, genuinely affordable package. Whether you’re new to street bashing or you’re an INFRACTION diehard adding a small-scale buddy to the fleet, this is real verified 50+ MPH performance in a form factor that lets you bash anywhere pavement can take you.
PowerGuard smart speed management — first introduced on the MINI KRATON — is built into the INFRACTION GROM from the ground up and gives you two ways to bash. Right out of the box, Adrenaline Mode delivers a confident 30+ MPH on 3S that’s approachable for beginners and still plenty fast for serious fun. When you’re ready to unleash everything, insert the included PowerKey to unlock full Chaos Mode: real, verified 50+ MPH that turns every parking lot, driveway, and dirt stretch into your own personal thunder dome. Two modes. One machine. No additional purchases required to access either.
All that speed stays manageable thanks to Spektrum Dynamic Stability Control (DSC). Four selectable modes — Off, Low, Medium, and High — automatically apply steering correction calibrated to your surface and skill level, so every slide stays controllable rather than chaotic. Dial it back as your confidence grows or leave it engaged and just enjoy the ride. Underneath, the INFRACTION GROM 3S is built ARRMA tough: sealed center differential with metal spur gear, easy-access front and rear differentials, enclosed 4X4 drivetrain that keeps dirt out, aluminum 12mm wheel hexes that handle hard launch abuse, and a street-tough composite chassis that shrugs off curb hits without blinking. Double wishbone four-wheel independent suspension with oil-filled shocks keeps the low-slung chassis planted through every corner. dBoots Hoons white compound belted tires own the pavement, and the SmartFit click-out battery system means no straps, no hassle — just precise, secure fit every single run.
Features:
Speed & Power
- Spektrum 4350Kv Firma Brushless Motor (2838 size)
- Spektrum SLT 2-in-1 40A Brushless Waterproof ESC & Receiver with DSC and PowerGuard
- 3S brushless power — 50+ MPH top speed (Chaos Mode)
- PowerGuard smart speed management with two modes:
- Adrenaline Mode: 30+ MPH out of the box, no PowerKey needed
- Chaos Mode: 50+ MPH unlocked with the included PowerKey
Spektrum DSC (Dynamic Stability Control)
- Four selectable modes: Off / Low / Medium / High
- Automatically applies steering correction for controllable stunt action
- Off: zero correction, full manual control
- Low: optimized for high-grip surfaces
- Medium: optimized for lower-grip surfaces
- High: maximum safety and confidence for beginners
Chassis & Drivetrain
- First-ever all-road street basher on the GROM platform
- Street-tough composite chassis with low-slung design for planted cornering
- Metal 4X4 enclosed drivetrain for dirt-out durability
- Sealed center differential with metal spur gear
- Easy-access front and rear differentials
- Double wishbone four-wheel independent suspension
- Oil-filled shocks for smooth, confident impact absorption
- Aluminum 12mm wheel hexes built for hard launch abuse
- Adjustable steering turnbuckles
- Front and rear bumpers with body location system
- Cooling fan and motor heatsink for extended runtime
Battery & Access
- SmartFit click-out battery system — no straps, precise secure fit every run
- Quick-release clipless body design with inner body support frame
- Fast battery swaps and easy chassis access between runs
- IC2 connector / 3S LiPo compatible
Tires, Wheels & Body
- dBoots Hoons white compound belted tires for maximum street grip and slide control
- Aluminum 12mm wheel hexes
- Painted, decaled, and trimmed body — Blue/Red
- 2-year limited warranty
Specifications:
| Specification |
Detail |
| Scale |
1/12 |
| Vehicle Type |
All-Road Street Basher |
| Drivetrain |
4WD |
| Length |
15.04" (382mm) |
| Width |
6.85" (174mm) |
| Height |
4.65" (118mm) |
| Wheelbase |
8.74" (222mm) |
| Weight |
2.6 lbs. (1.17kg) |
| Top Speed |
50+ mph (Chaos Mode) |
| Motor |
Spektrum Firma 2838 4350Kv Brushless |
| ESC |
Spektrum SLT 2-in-1 40A Brushless Waterproof |
| Radio |
Spektrum SLT2 2.4GHz with DSC |
| Servo |
Spektrum SX114 |
| Shock Type |
Oil-Filled |
| Front Spring Rate |
23.3 lb/in (4.08 N/mm) |
| Rear Spring Rate |
17.36 lb/in (3.04 N/mm) |
| Chassis |
Composite |
| Tire Tread |
dBoots Hoons |
| Tire Compound |
White |
| Wheel Hex Size |
12mm |
| Pinion |
27T |
| Spur Gear |
59T |
| Gear Ratio |
2.19:1 |
| Gear Pitch |
MOD 0.5 |
| LiPo Compatibility |
3S |
| Connector Type |
IC2 |
| Battery Tray Dimensions |
3.93 x 1.34 x 0.80" (100 x 34 x 20.3mm) |
| Max Battery Dimensions |
4.41 x 1.34 x 0.88" (112 x 34 x 22.5mm) with optional ARA-1418 strap |
| Technology |
DSC, Smart |
| Water Resistant |
Yes |
| Completion Level |
Ready-To-Run |
In the Box:
| Qty |
Item |
| 1 |
ARRMA INFRACTION GROM 3S BLX 4X4 RTR (Blue/Red) |
| 1 |
Spektrum SLT 2-in-1 40A Brushless ESC & Receiver (installed) |
| 1 |
Spektrum Firma 4350Kv Brushless Motor (installed) |
| 1 |
Spektrum SLT2 2.4GHz Transmitter with DSC |
| 1 |
Spektrum SX114 Servo (installed) |
| 4 |
AA Transmitter Batteries |
| 1 |
Instruction Manual |
Needed to Complete:
| Qty |
Item |
| 1 |
3S LiPo Battery with IC2 Connector |
| 1 |
LiPo Battery Charger |
| 1 |
Compatible USB Power Supply |
| 1 |
LiPo Safe Battery Bag |
PowerKey Note: The included PowerKey unlocks full Chaos Mode (50+ MPH). Without the PowerKey inserted, Adrenaline Mode (30+ MPH) is active by default — a great starting point for newer drivers. Insert the PowerKey when you’re ready for everything the INFRACTION GROM has to offer.
